Mechanical movement.



No. 893,068. PATENTED JULY 14, 1908.

G. E. GAY.

' MBGHANIGAL MOVEMENT. APPLICATION FILED AUG. 15, 1906.

INVENTOI? Q QW UNITED STATES. rATENT OFFICE.

GEORGE E. GAY, OF MALDEN, MASSACHUSETTS, ASSIGNOR TOT HE LINEN THREAD COMPANY,

I OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented July 14, 1908.

' To all whom it may concerh.

Be it known that I, GEORGE E. GAY, a citizen of the United States, and resident of and whose post-oflice address is Maiden, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Mechanical Movements,

- of which the following is a specification.

My invention relates to mechanical movements, and particularly to devices by which a reciprocating element is maintained con' stantly in parallel-relation to a given plane irrespective of its position in successive stages of reciprocation.

The objects of my invention are to provide a simple, inexpensive, reliable and efiicient device for maintaining an object in parallel relation to a given plane at all times. I attain these objects in the device illustrated and described in the accompanying drawings and specification, in which drawings like numerals of reference refer to like parts throughout the res ective views.

Figure 1 is a si e elevation of my device applied to one end of a reed and heddle in a hand loom; the reed beingshown at an ex treme point of reciprocation both vertically and horizontally. Fig. 2 is a similar view showing the reedheddle midway between the two extreme oints of reciprocation both vertical and horizontal. Fig. 3 is a similar view showing the reed at the extreme point of horizontal reciprocation opposite to that shown in Fig. 1. Fig. 4 is a similar view showing the reed at the extreme lowest point of vertical reci rocation, and also at the extreme point 0 horizontal reciprocation but opposite to that shown-in Fig. 3. Figs. 5, 6 and 7 show diagrammatically, IllOdlfiCfitiOIlS of the device. Fig. 8 is a perspective view showing two devices applied to a reed. g

In the figures, 1- is an oscillating member which may be a plate, crank or lever or other element and is secured at the points 2 and 3 by two links 4 and -5 of equal length, to the two points of support 6 and 7'; the links 4.' and 5 being free to revolve about 6 and --7.

8 and 9' are two links of equal length attached to 1- at 10- and 11 (in Fig.6, 2- and -10- coincide).

12- is an object which it is desired to reciprocate, but maintain at all times parallel to a given lane, as the vertical or one at any other esired angle, and to which the links 8- and 9- are attached at 1 3- and 14.

In Fi s. 1, 2, 3 and 4, -15 is a slot or groove iverging into the two inclined slots 16 and -17, which I here show only to illustrate the use of my improvement as applied to a hand loom, which loom is described in my application dated November 6, 1905, Serial Number 285,966, though I do not limit my invention to this purpose.

these fi ures; -12 is the combined reed and he dle which it is proposed to keep always in parallel relation to a given plane;

i and in' these figures I have shown -1 as a cruciform plate with the points of attachment -2 310 and 1 1- disposed in quadrangular and rectangular relation. I may, however, vary this disposition, as shown in Figs. 6 and 7, where in Fig. 6, 1 is in the form of a triangle, the point of attachment 2- coinciding with 10-, so that the links -4 and 8 are attached at the same point; but even here it is to be noted that the relation is in fact actually quadrangular and rectangular.

In Fig. 7 the arrangement consists practically of a double crank lever. It will be understood that the arrangement may be indefinitely modified without departing from the principle of my invention.

In Fig. 5, I have shown the element 1- formed of two separate parts -1 and 1, adjustably connected at 18 by a screw or clamp or other securing device, by which the angle of the moving part 12- may be changed while its parallel relation at all points of reciprocation remains unaltered. Of course, in such change the angle may be so altered as to be no longer a rectangle.

In Fig. 8, 19 is a shaft to which the links 5-5 are firmly secured so that the movements of the oscillating members and the other parts of the complete device are identical and isochronous.

The operation of the device is as follows: Since the links 4 and 5 are of equal length and fastened to the oscillating member 1 at points as far apart as the points of attachment of those links on the base or bases, the links must necessarily be parallel each to each and any two points in the oscillating member w1ll always maintain'the same angular relation to each other at any and all points of oseillationythen since the links 89-are also equal and parallel, the reciprocating object 12 must always remain parallel to the pivoted points of attachment to the oscillating member.

What I claim as new herein and desire to secure by Letters Patent is:

l. The combination of two parallel supports, guides in said supports, two parallel links of equal length mounted on fixed pivots at one end; a separate movable member to-which the links are pivotally attached; a second pair of parallel links of equal length pivoted to the movable member at points which are separate from and in a line at an angle to the line of pivots of the first pair of links, and a reciprocating member engaging said guide and pivotally attached to the second pair of links.

2. The combination of two parallel supports formed with guides, a pair of parallel equal links pivoted to said parallel supports; a reciprocating element engaging said guides,

a pair of parallel equal links pivoted to said reciprocating element, and an oscillating member intermediate the pairs to which the free ends of all the links are pivotally secured in a fixed and determined angular relation.

3. The combination of a base; a pair of links of equal length pivoted to said base; an oscillating member to which the links are pivotally secured in parallel relation; an arm; means for adjustably securing said arm 'to the oscillating member at any desired to each base; a plurality of oscillating mem- I bers to which the links on each base are pivotally secured in parallel relation; a second pair of links of equal length pivotally attached to each oscillating member in parallel relation, and also pivotally attached to the reciprocating element.

5. The combination of two parallel supports having guides; a pair of parallel links of equal length pivoted thereto and. having an oscillatory movement of substantially deg; an oscillating member pivotally attached to the free ends of said links; a second pair of links of equal length pivotally sesured to the oscillating member in parallel relation, and a reciprocating member engaging said guides to which said second pair of links are pivotally attached.

Signed at Malden in the county of MiddleseX and State of Massachusetts this second day of August A. D. 1906.

GEORGE E. GAY.

Witnesses:

ALBERT F. SARGENT, WILLIAM O. BREDEEN. 

